#!/usr/bin/perl -w
#
#
#  rhautoimport
#
#  Copyright (C) 2009-2016 Christian Pointner <equinox@helsinki.at>
#
#  This file is part of rhautoimport.
#
#  rhautoimport is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  any later version.
#
#  rhautoimport is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with rhautoimport. If not, see <http://www.gnu.org/licenses/>.
#

use strict;
use Switch;
use Date::Calc;
use Time::localtime;
use IO::Handle;
use IPC::Open3;
use File::Slurp;
use RHRD::rddb;

use lib '/usr/local/share/rhautoimport/';
use rhautoimport;


my @STATIC_FILES = ($ENV{'HOME'} . "/frontex", $ENV{'HOME'} . "/maribor" );

my $STAT_FILE = $ENV{'HOME'} . "/rhautoimport-mz.stat";
my $ZF_NOTE_FILE = $ENV{'HOME'} . "/rhautoimport-zf.last_note";
my $ZF_NEW_FILE = $ENV{'HOME'} . "/rhautoimport-zf.is_new";
my $PV_ID = '352';

binmode(STDIN, ":utf8");
binmode(STDOUT, ":utf8");
binmode(STDERR, ":utf8");

if($#ARGV >= 0 && $ARGV[0] eq 'last') {
  print "!!!This is the last attempt, there won't be a retry on error!!!\n"
}

my $user = `/usr/bin/id -un`;
$user =~ s/\n//;

my @today = Date::Calc::Today();
my @next_day = Date::Calc::Add_Delta_Days(@today, 1);
my $dow = Date::Calc::Day_of_Week(@today);
if($dow == 5) {
  @next_day = Date::Calc::Add_Delta_Days(@today, 3);
}

print "today: " . Date::Calc::Date_to_Text(@today) . "\n";
print "next day would be: " . Date::Calc::Date_to_Text(@next_day) . "\n";
my @import_day = @next_day;
if(localtime->hour < 12) {
  print "It's forenoon, assuming to import for today\n";
  @import_day = @today;
}
print "day of broadcast: " . Date::Calc::Date_to_Text(@import_day) . "\n";


$dow = Date::Calc::Day_of_Week(@import_day);
my $group = "";
switch($dow) {
  case 1 { $group = "mahlzeitMo" }
  case 2 { $group = "mahlzeitDi" }
  case 3 { $group = "mahlzeitMi" }
  case 4 { $group = "mahlzeitDo" }
  case 5 { $group = "mahlzeitFr" }
  else { print("invalid day of week?!\n"); exit 1; }
}

my ($dbh, $errorstring) = RHRD::rddb::opendb();
if(!defined $dbh) {
  print "$errorstring\n";
  exit 1;
}
my @allowed_dbs = RHRD::rddb::get_dropboxes($dbh, $user, $group);
if(!defined $allowed_dbs[0] && defined $allowed_dbs[2]) {
  print "$allowed_dbs[2]\n";
  exit 1;
}

if(scalar(@allowed_dbs) != 1) {
  print "found no or more than one Dropboxes for this group?!\n";
  RHRD::rddb::closedb($dbh);
  exit 1;
}
my $dropbox = $allowed_dbs[0]->{'PATH'};


my $import_date = sprintf("%04d-%02d-%02d", @import_day);
my $current_date = `cat $STAT_FILE`;
if($current_date eq $import_date) {
  print "Already downloaded file of day in question\n";
  RHRD::rddb::closedb($dbh);
  exit 0;
}

unless(-e $ZF_NEW_FILE) {
  print "zip-fm not imported yet - ";
  if($#ARGV >= 0 && $ARGV[0] eq 'last') {
    print "giving up, rebroadcasting last show";
  } else {
    print "will retry later\n";
    exit 0,
  }
}


sub read_first_line {
  my ($file) = @_;
  my @lines = read_file($file, binmode => ':utf8', err_mode => 'quiet');
  return "" unless ($lines[0]);

  chomp($lines[0]);
  return $lines[0];
};

sub get_note {
  my ($file) = @_;
  my @lines = read_file($file, binmode => ':utf8', err_mode => 'quiet');
  return "" unless ($lines[0]);

  chomp($lines[0]);
  $lines[0] = "<p><strong>$lines[0]</strong></p>\n";
  return join('',@lines);
};

sub find_next_file {
  my ($dir, $current) = @_;

  my %files = ();
  opendir(my $dh, $dir) or die $!;
  while (my $file = readdir($dh)) {
    next if ($file =~ m/^\./);
    next if ($file =~ m/_notes$/);
    $files{$file} = 1;
  }
  closedir($dh);

  my $num = scalar keys %files;
  foreach my $file (sort keys %files) {
    if($file gt $current) {
      return $num, $file;
    }
    $num--;
  }

  return 0, "";
};

my $sum_title = "zip-fm (WH)";
my $sum_text = get_note($ZF_NOTE_FILE) . "<br/>\n";

print "\nsearching local files:\n";

my @files = ();
my %next_files = ();
foreach my $dir (@STATIC_FILES) {
  my $file = read_first_line("$dir/.current");
  if($file eq "") {
    print " $dir: skipped !!! (no .current file or no more files)\n";
    next;
  }
  my ($remaining, $next_file) = find_next_file($dir, $file);
  if($remaining >= 1) {
    print " $dir: adding $file\n      (next: $next_file, $remaining files remaining)\n";
  } else {
    print " $dir: adding $file\n      (this was the last file!!!!)\n";
  }
  $next_files{$dir} = $next_file;

  $sum_title = "$sum_title, " . read_first_line("$dir/.sum_title");
  $sum_text = $sum_text . "<br />\n" . get_note("$dir/$file" . "_notes");
  foreach my $ext ("flac", "wav", "ogg", "mp3") {
    push(@files, "$dir/.jingle.$ext") if(-e "$dir/.jingle.$ext");
  }
  push(@files, "$dir/$file");
}
$sum_text = $sum_text . "<br/><br/>\n";

print "\nsummary:\n" . $sum_title . "\n\n" . $sum_text . "\n";
rhautoimport::pv_add_note($sum_title, $sum_text, $PV_ID, sprintf("%04d-%02d-%02d", @import_day), "1");
print "\n";


print "will import " . join(", ", @files) . " to dropbox $dropbox\n";


my $error_cb = sub {
  my ($text) = @_;

  print "\n$text";
  return 0;
};

rhautoimport::check_key_file() or die "Import Key not found, use rhautoimport-create-id to create one\n";

my $ret = 1;
my $log = rhautoimport::clear_carts($dbh, $group, 0);
my ($cart, $high_cart) = rhautoimport::get_cart_range($dbh, $group);
foreach my $file (@files) {
  if($cart > $high_cart) {
    print "not enough carts - will ignore remaining files!!!";
    last;
  }
  print " importing $file to cart $cart\n";
  my $import_log;
  ($ret, $import_log) = rhautoimport::import_single($file, $dropbox, $user, 0, $error_cb);
  $log .= $import_log;
  last unless $ret;

  $cart++;
}

RHRD::rddb::closedb($dbh);

if(!$ret) {
  print "\nImport Error:\n";
  print $log;
  exit 1;
}

unlink($STAT_FILE);
open(my $fhs, '>', $STAT_FILE);
print $fhs $import_date;
close($fhs);

unlink($ZF_NEW_FILE);
foreach my $dir (@STATIC_FILES) {
  open(my $fhs, '>', "$dir/.current");
  print $fhs $next_files{$dir} if ($next_files{$dir});
  close($fhs);
}

exit 0;